Release Notes - v0.189.0

v0.189.0 (July 22, 2026)

Title: Improve Byron EBB decoding and add opcert counter decoding

Date: July 22, 2026

Version: v0.189.0

This release fixes malformed Byron EBB decoding and adds typed LocalStateQuery access to operational certificate counters.

💪 Improvements

• Fixed Byron EBB nil-header decoding: ByronEpochBoundaryBlock.UnmarshalCBOR now returns an error when the decoded header is nil, so malformed Byron EBB data fails early instead of creating a block that can panic later.

• Added typed opcert counter decoding: LocalStateQuery now decodes DebugChainDepState into operational-certificate counters and returns them through GetOpCertCounters, so consumers can retrieve the counters through the typed API.

• Refined CBOR modernization: The CBOR-related code now uses the modernized implementation path without changing user-facing behavior.

• Streamlined issue-closed workflow automation: The repository no longer includes the issue-closed workflow automation files.

🙏 Thank You

Thank you for following gOuroboros releases.

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